Non-Debye Screening in Finite Temperature QCD

Abstract

We study the non-abelian, gauge invariant, screening potential between two charges in a quark-gluon plasma. Using Braaten and Pisarski resummed perturbation theory in temporal axial gauge, we find a repulsive power screened potential which behaves as $\sim 1/r^6$ at large distance. This questions either the physical meaning of the Debye mass or the known pragmatic treatment of the temporal axial gauge propagator.

Comments: LPTHE-Orsay 94/46.12 pages (latex), (Due to the appearance of more recent related works, we changed our conclusion somewhat.)